/**
 *  TxStateObserver.java        22-ott-2009
 *   
 * Copyright (c) 2009 mentalsmash.org
 *  
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 * 
 *  http://www.apache.org/licenses/LICENSE-2.0
 * 
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 * 
 *  The use of the Apache License does not indicate that this project is
 *  affiliated with the Apache Software Foundation.
 */

package org.mentalsmash.tazio.transactions.control;

import org.mentalsmash.tazio.transactions.model.identifiers.TID;
import org.mentalsmash.tazio.transactions.user.TransactionStatus;

public interface TxStateObserver {
    /**
     * This method gets called whenever a transaction changes its internal
     * status
     * 
     * @param from
     *            The status from which the transaction changed its state
     * @param to
     *            The new state of the transaction
     * @param tid
     *            The transaction ID of the transaction that was the source of
     *            the status change
     */
    void statusChanged(TransactionStatus from, TransactionStatus to, TID tid);

}
